Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    Local DNS Records on different subnet

    Scheduled Pinned Locked Moved General pfSense Questions
    87 Posts 5 Posters 7.0k Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • stephenw10S
      stephenw10 Netgate Administrator
      last edited by

      You need clients in the ISP router LAN to use the correct DNS server. So either passed by DHCP or set manually if you can't set a DNS server in the ISP router DHCP settings.

      jhmc93J 1 Reply Last reply Reply Quote 0
      • jhmc93J
        jhmc93 @stephenw10
        last edited by

        @stephenw10 So I can't pass it through then?

        1 Reply Last reply Reply Quote 0
        • stephenw10S
          stephenw10 Netgate Administrator
          last edited by

          Can't pass what through?

          You need clients to use the pi-hole or pfSense for DNS in order be able to resolve anything stored there.

          Right now they are probably using the ISP router for DNS because it is running DHCP for that subnet?

          jhmc93J 1 Reply Last reply Reply Quote 0
          • jhmc93J
            jhmc93 @stephenw10
            last edited by

            @stephenw10

            Hello,
            So my pi hole is connected to isp router then pfsense dns is connected to pi hole and pi hole is then pointing to an ip that runs traefik in my pfsense subnet, hope that makes sense

            1 Reply Last reply Reply Quote 0
            • stephenw10S
              stephenw10 Netgate Administrator
              last edited by

              Ok. And the issue is that client in the same segment as the pihole are not using it for DNS?

              The problem is that they are probably being set to use the ISP router for DNS by the ISP router if it's still running as a DHCP server.

              jhmc93J 1 Reply Last reply Reply Quote 0
              • jhmc93J
                jhmc93 @stephenw10
                last edited by

                @stephenw10 so basically pi hole runs on 192.18.. pfsense which is also 192.168.. is pointing to that in DNS settings then the :LAN side of the pfsense is 10.84.. which is where my traefik is located, the problem I have is how do i get my laptop which is on for example 192.168.. to use my local cname records even though I have manually set the pihole as the laptops dns server. Because traefik is on my pfsense subnet it wont resolve to a webpage set on CNAME on pihole.

                1 Reply Last reply Reply Quote 0
                • stephenw10S
                  stephenw10 Netgate Administrator
                  last edited by

                  What does it resolve to? If the client is statically configured to use the pihole for DNS it should resolve it the same as anything else.

                  However it may not be able to reach whatever that resolves to. That's a different problem.

                  jhmc93J 1 Reply Last reply Reply Quote 0
                  • jhmc93J
                    jhmc93 @stephenw10
                    last edited by

                    @stephenw10 here some screenshots:

                    Screenshot 2024-11-27 195656.png Screenshot 2024-11-27 195733.png Screenshot 2024-11-27 200731.png

                    1 Reply Last reply Reply Quote 0
                    • stephenw10S
                      stephenw10 Netgate Administrator
                      last edited by

                      There's no need to obscure private IP addresses like 192.168.X.X or 10.X.X.X. Those are only defined inside your network.

                      So what does the client resolve the traefik server to?

                      It looks like you have a domain override pointing to a server behind pfSense. Does the pihole have a route to that subnet?

                      Can you connect to the traefik server from a client using it's IP address directly?
                      The client will also need a route to that subnet via pfSense which it won't have by default.

                      It seems like you may have both a routing issue and DNS problems here. And that is typical of running clients on the WAN side of pfSense where asymmetry is highly likely.

                      jhmc93J 1 Reply Last reply Reply Quote 0
                      • jhmc93J
                        jhmc93 @stephenw10
                        last edited by

                        @stephenw10 see the DNS CNAME records resolve if I'm on pfsense's subnet but not isp subnet, pihole runs via isp subnet but it does work when I set the pfsense to that pihole via ISP

                        1 Reply Last reply Reply Quote 0
                        • stephenw10S
                          stephenw10 Netgate Administrator
                          last edited by

                          Does it actually not resolve or just not connect?

                          The screenshot above looks like a connection issue not a DNS problem.

                          If it does resolve what is it resolving to at the client?

                          jhmc93J 2 Replies Last reply Reply Quote 0
                          • jhmc93J
                            jhmc93 @stephenw10
                            last edited by jhmc93

                            @stephenw10 so I am on my pfsense subnet right now,Screenshot 2024-11-27 215709.png

                            where as it doesn't do that if I'm on my isp router

                            johnpozJ 1 Reply Last reply Reply Quote 0
                            • johnpozJ
                              johnpoz LAYER 8 Global Moderator @jhmc93
                              last edited by johnpoz

                              @jhmc93 that browser error is not a dns not resolving, browser not resolving something would look like

                              2024-11-27_160113.jpg

                              Your machine resolved that to something, is it the right thing - who knows from that picture - but it did resolve it.

                              If your using firefox go to about:networking#dns it will show you what you resolved something too

                              dns.jpg

                              An intelligent man is sometimes forced to be drunk to spend time with his fools
                              If you get confused: Listen to the Music Play
                              Please don't Chat/PM me for help, unless mod related
                              SG-4860 24.11 | Lab VMs 2.8, 24.11

                              jhmc93J 1 Reply Last reply Reply Quote 0
                              • jhmc93J
                                jhmc93 @stephenw10
                                last edited by jhmc93

                                not showing anything

                                1 Reply Last reply Reply Quote 0
                                • jhmc93J
                                  jhmc93 @johnpoz
                                  last edited by

                                  @johnpoz Screenshot 2024-11-27 224050.png
                                  guessin this is it can't be sure though

                                  johnpozJ 1 Reply Last reply Reply Quote 0
                                  • stephenw10S
                                    stephenw10 Netgate Administrator
                                    last edited by

                                    On the client just try to resolve it at the command line so you can see what it resolves to.

                                    If it resolves to something in the 10.84.x.x subnet (pfSense LAN) then you will need a route to it via pfSense.

                                    If you just put all your clients on a subnet behind pfSense this would work without issue.

                                    jhmc93J 1 Reply Last reply Reply Quote 0
                                    • jhmc93J
                                      jhmc93 @stephenw10
                                      last edited by

                                      @stephenw10 by client do u mean my machine I work on, the traefik machine or the pihole server??

                                      1 Reply Last reply Reply Quote 0
                                      • stephenw10S
                                        stephenw10 Netgate Administrator
                                        last edited by

                                        I mean a desktop/laptop in the 192.168.8.X subnet (pfSense WAN side).

                                        jhmc93J 1 Reply Last reply Reply Quote 0
                                        • johnpozJ
                                          johnpoz LAYER 8 Global Moderator @jhmc93
                                          last edited by johnpoz

                                          @jhmc93 how would you think that is it - that name ocsp.digicert.com is not the fqdn you were trying to go to.. Come on Man!!

                                          The fqdn in your proxmox shows pve.local.something - does that look anything even remotely close? That is the oscp check for a digicert cert..

                                          https://en.wikipedia.org/wiki/Online_Certificate_Status_Protocol

                                          I thought it was pretty obvious - I highlighted 2 names that are local on my network, nas and sg4860.home.arpa - that resolve to local rfc1918 IPs

                                          An intelligent man is sometimes forced to be drunk to spend time with his fools
                                          If you get confused: Listen to the Music Play
                                          Please don't Chat/PM me for help, unless mod related
                                          SG-4860 24.11 | Lab VMs 2.8, 24.11

                                          jhmc93J 1 Reply Last reply Reply Quote 0
                                          • jhmc93J
                                            jhmc93 @johnpoz
                                            last edited by

                                            @johnpoz 59ce8966-1ead-493e-b47c-7d1c928cf9f2-image.png I'm thick sorry

                                            johnpozJ 1 Reply Last reply Reply Quote 0
                                            • First post
                                              Last post
                                            Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.